DIY Projector Screen Size Calculator

Screen Size
Throw Distance
Viewing Distance
Brightness / Lumens
DIY Screen
Ceiling Mount

Use this before building a screen at home — it gives exact viewing area, fabric, and frame sizes so you order the right amount of material.

How to use: Enter your target diagonal, frame border width (typically 2–4 inches), and aspect ratio, then click Calculate. Use the fabric size when ordering blackout cloth or projector screen material.

DIY Projector Screen Size Calculator

Plan fabric and frame dimensions for a homemade projector screen.

Target diagonal (Inches)

Frame border (Inches)

Aspect ratio

16:9 4:3 21:9

Screen preview

Cut sizes and frame dimensions will appear here.

HAPPRUN projectors for your setup

F5: Upgraded Mirroring Projector$56.99
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4K Home Projector with WiFi 6 and Bluetooth 5.2 (300 , 1500 ANSI)$254.98
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Smart Projector – Netflix Licensed, 1500 ANSI, Auto Focus, WiFi 6, Bluetooth 5.2$99.00
Buy on Amazon

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